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102 lines
2.4 KiB
Go
102 lines
2.4 KiB
Go
package ddl
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import (
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"database/sql"
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"errors"
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"github.com/drone/drone/store/datastore/ddl/mysql"
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"github.com/drone/drone/store/datastore/ddl/postgres"
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"github.com/drone/drone/store/datastore/ddl/sqlite"
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)
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// Supported database drivers
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const (
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DriverSqlite = "sqlite3"
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DriverMysql = "mysql"
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DriverPostgres = "postgres"
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)
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// Migrate performs the database migration. If the migration fails
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// and error is returned.
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func Migrate(driver string, db *sql.DB) error {
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if err := checkPriorMigration(db); err != nil {
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return err
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}
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switch driver {
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case DriverMysql:
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return mysql.Migrate(db)
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case DriverPostgres:
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return postgres.Migrate(db)
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default:
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return sqlite.Migrate(db)
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}
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}
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// we need to check and see if there was a previous migration
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// for drone 0.6 or prior and migrate to the new migration
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// system. Attempting to migrate from 0.5 or below to 0.7 or
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// above will result in an error.
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//
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// this can be removed once we get to 1.0 with the reasonable
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// expectation that people are no longer using 0.5.
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func checkPriorMigration(db *sql.DB) error {
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var none int
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if err := db.QueryRow(legacyMigrationsExist).Scan(&none); err != nil {
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// if no legacy migrations exist, this is a fresh install
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// and we can proceed as normal.
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return nil
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}
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if err := db.QueryRow(legacyMigrationsCurrent).Scan(&none); err != nil {
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// this indicates an attempted upgrade from 0.5 or lower to
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// version 0.7 or higher and will fail.
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return errors.New("Please upgrade to 0.6 before upgrading to 0.7+")
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}
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db.Exec(createMigrationsTable)
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db.Exec(legacyMigrationsImport)
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return nil
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}
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var legacyMigrationsExist = `
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SELECT 1
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FROM gorp_migrations
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LIMIT 1
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`
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var legacyMigrationsCurrent = `
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SELECT 1
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FROM gorp_migrations
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WHERE id = '16.sql'
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LIMIT 1
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`
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var legacyMigrationsImport = `
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INSERT INTO migrations (name) VALUES
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('create-table-users')
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,('create-table-repos')
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,('create-table-builds')
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,('create-index-builds-repo')
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,('create-index-builds-author')
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,('create-table-procs')
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,('create-index-procs-build')
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,('create-table-logs')
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,('create-table-files')
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,('create-index-files-builds')
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,('create-index-files-procs')
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,('create-table-secrets')
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,('create-index-secrets-repo')
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,('create-table-registry')
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,('create-index-registry-repo')
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,('create-table-config')
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,('create-table-tasks')
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,('create-table-agents')
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,('create-table-senders')
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,('create-index-sender-repos')
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`
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var createMigrationsTable = `
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CREATE TABLE migrations (
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name VARCHAR(255)
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,UNIQUE(name)
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)
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`
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